Salesmen, politicians and chief executives are all cut from the same mold. Their fundamental job is to impress and make others feel good about buying what they have to sell. As someone who has spent his career in product delivery, and who is sceptical by nature, Marc Hamann had a mixed relationship with the sales and presentation types. He has all too often ended up on the hook when one of them sold unicorns when what we had in the barn was donkeys. But, unlike many technically oriented delivery specialists, he has a deep appreciation for the value and necessity of presentation and sales. He understands the symbiotic nature of our separate disciplines. In the end, things only work out well when both roles are filled competently, and both sides need to remember their dependence on the other if they want to succeed.